Amazon’s Secret Wiki

In an oddly ultra-soft launch, Amazon appears to have silently begotten a wiki entirely devoted to product reviews entitled Amapedia. This seems to me like a basically good (or at least non-evil, in the Googlian sense) idea. I just wonder a) how they’re going to keep corporations from exploiting it with fake reviews (though I suppose Amazon probably has some experience with this (warning: juvenilia alert), b) how they’re going to integrate it with their main site, and c) why didn’t they call it Wikizon? Is it not more wiki- than -pedia?